bit substitution cipher

См. также в других словарях:

• Substitution cipher — In cryptography, a substitution cipher is a method of encryption by which units of plaintext are replaced with ciphertext according to a regular system; the units may be single letters (the most common), pairs of letters, triplets of letters,… …   Wikipedia

• Substitution box — In cryptography, a substitution box (or S box) is a basic component of symmetric key algorithms. In block ciphers, they are typically used to obscure the relationship between the plaintext and the ciphertext mdash; Shannon s property of confusion …   Wikipedia

• Cipher — For other uses, see Cipher (disambiguation). Edward Larsson s rune cipher resembling that found on the Kensington Runestone. Also includes runically unrelated blackletter writing style and pigpen cipher. In cryptography, a cipher (or cypher) is… …   Wikipedia

• Substitution-permutation network — In cryptography, an SP network, or substitution permutation network (SPN), is a series of linked mathematical operations used in block cipher algorithms such as AES.These networks consist of S boxes and P boxes that transform blocks of input bits …   Wikipedia

• ARIA (cipher) — Infobox block cipher name = ARIA designers = publish date = 2003 derived from = AES derived to = related to = certification = South Korean standard key size = 128, 192, or 256 bits block size = 128 bits structure = Substitution permutation… …   Wikipedia

• Churning (cipher) — Churning is an encryption function used to scramble downstream user data of the ATM passive optical network system defined by the ITU G.983.1 standard. The standard states that churning offers a low level of protection for data confidentiality .… …   Wikipedia

• Akelarre (cipher) — Infobox block cipher name = Akelarre designers = G. Álvarez, D. de la Guía, F. Montoya, A. Peinado publish date = 1996 derived from = IDEA, RC5 derived to = related to = key size = 128 bits block size = 128 bits structure = Substitution… …   Wikipedia

• Lucifer (cipher) — In cryptography, Lucifer was the name given to several of the earliest civilian block ciphers, developed by Horst Feistel and his colleagues at IBM. Lucifer was a direct precursor to the Data Encryption Standard. One version, alternatively named… …   Wikipedia

• Serpent (cipher) — Infobox block cipher name = Serpent caption = Serpent s linear mixing stage designers = Ross Anderson, Eli Biham, Lars Knudsen publish date = 1998 08 21 derived from = Square related to = certification = AES finalist key size = 128, 192 or 256… …   Wikipedia

• Block cipher — In cryptography, a block cipher is a symmetric key cipher operating on fixed length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take (for example) a 128 bit block of plaintext as… …   Wikipedia

• Feistel cipher — In cryptography, a Feistel cipher is a symmetric structure used in the construction of block ciphers, named after the German IBM cryptographer Horst Feistel; it is also commonly known as a Feistel network. A large proportion of block ciphers use… …   Wikipedia